Hydraulic Jacks

A jack is used for
lifting heavy loads by applying force. The mechanism using which
force is applied can be different, based on the kind of jack. There
are two types of force employed by jacks, one is hydraulic and other
is mechanical. In these two jacks, hydraulic jack is stronger and
capable of lifting heavier loads. Force generated by pressure is a
prime factor of these jacks. There are two cylinders, one large and
one small, connected with each other. When force is applied to either
of cylinder, equal pressure is generated in both cylinders. This is
because even the larger cylinder will generate higher force, the
pressure in both cylinders will remain the same. For lifting heavy
loads, these jacks use pump plungers for moving oil through two
cylinders.